These Chinet 12 ounce bowls are made of post-industrial waste from poly-coated milk carton production (defective cartons that never had milk in them). The plastic is separated from the milk carton stock and then the pulp is used for the plates, while the plastic goes to a company that uses it in a waste-to-energy production process. The bowls are elemental chlorine-free and made thick and durable without any coating, so that they are biodegradable. They can be used for hot or cold foods. White. Pack of 125. See us.huhtamaki.com for more info. Eco Categories: Recycled, biodegradable, less toxic.